Improved gasometer



NA PETERS, PHO HER, WASHINGTON u c licite/xl (ffioz. y

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JOHN E. HGB-BS, ULF NORTH BERWICK, MAINE. Letters Patent No. 86,155,dated .Tenue/ry 26, 1869.

The Schedule referred to in these Letters Patent and making part of thelame.

To all persons t whom these presents may come:

-Be it known that I, J OHNE. Hons, ofNorth Berwick, in the county ofYork, and State of Maine, have invented anew and useful or improvedGasometer; and do hereby declare the same to .be fully described in thefollow ing specification, and represented in the accompanying drawings,of which- Figure l denotes a side elevation,

Figure 2, an end view,

Figure 3 is a longitudinal section, and

Figure 4 is a transverse section of it.

This gasometer is intended for the use of chemists, and particularly forrailway-carriages, its purpose being for holding gas, and emitting itund-er the pressure of springs, as hereinafter described.

In the drawings- A denotes a metallic plate or tablet, having underneathit another such plate or follower, C.

The edges of each of the plates A and C are bent or flanged, so as toform channels al a, to receive the edges of a ilexile tube, T, made ofIndia rubber, or any other gas-proof` equivalent.

Before the edges ofthe tube are inserted in the channels, such edgeshave strips, b b, of India rubber, or some other suitable compressiblematerial, cemented to them on the inner and outer surfaces of the tube.This tube, as shown in the drawings, is rectangular in horizontalsection.

After the edges, prepared with the packing-strips, have been inserted inthe channels of the parts A and C, the sides of each ofthe channels areto be pressed together, or one toward the other, so as to make, Withthel packing, an air or gas-tight joint.

The two parts A O, with the flexile tube, will then be very like anordinary bellows, and may be used to great advantage as a gasometer. t

Two bars, D D, are carried across the upper surface of the part A, andproject beyond its opposite edges, invmanner as represented. 4

There are also two other such bars, E E, which are extended across theunder surface of the follower O, and beyond its opposite edges.

- Those portions of such bars which so project beyond the edges of the lplate A and the follower O, are inserted Within a series of elasticloops, F F F F, made of vulcanized India rubber, the whole beingarranged -in manner as represented.

While the cross-bars serve to strengthen the plates A and C, and supportthe elastic loops or springs, the latter, by their arrangement, areenabled to operate to good advantage in drawing the follower' C towardthe plate A, so as to effect the discharge of gas from the gasometer, asmay be desired, when it may be supplied with gas. v v

I make no claim to the application of a board and weights to a gas-bag,for the purpose of expressing its contents.

The improved gasometer, or the combination and arrangement of thecross-bars and the loop-springs with the plates A C and flexile tube T,or their equivalent, the Whole being substantially as set forth.

Also, each of the plates A C, as made with the collapsible channels, toreceive the edges of the flexile tube.

Also, the combination and arrangement of the elastic packing-strips withthe fleXile-tuhe, and with the channelled plate applied to such packingand tube, as

set forth.

JOHN E. HOBBS. Witnesses:

R. H. EDDY, S. N.- Pirna.

